/*
 * Copyright 2011-2020 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.data.neo4j.repository.query.spel;

public class Neo4jQueryPlaceholderSupplier implements PlaceholderSupplier {

	private static final String PLACEHOLDER = "spel_expr";
	private int index = 0;

	@Override
	public String nextPlaceholder() {
		return parameterName(index++);
	}

	public String parameterName(int index) {
		return PLACEHOLDER + index;
	}

	@Override
	public String decoratePlaceholder(String placeholder) {
		return "{" + placeholder + "}";
	}
}
